HDS1021M Handheld Digital Storage. Oscilloscope & Multimeter. User Manual

Transcription

1 HDS1021M Handheld Digital Storage Oscilloscope & Multimeter User Manual

2 Dec edition Copy Right in this Manual Lilliput Company. All rights have been reserved. The Lilliput s products are under the protection of the patent rights in America and other countries, including ones which have already obtained the patent rights and those which are applying for. The information in this manual will replace all that in the materials published originally. The information in this manual was correct at the time of printing. However, OWON will continue to improve products and reserves the rights to changes specification at any time without notice. OWON is the registered trademark of the Lilliput Company. Xiamen Lilliput Technology Co.,Ltd.: the 5th floor, B Area, Chuangxin Mansion, Software Park,ZhenZhuWan, Huandao RD, Xiamen,Fujian,China Fujian Lilliput Optoelectronics Technology Co.,Ltd.:The mansion of optoelectronics hengsan road, Lantian industrial zone,zhangzhou,fujian,china Tel: Fax: Mail:sales@owon.com.cn

3 General Warranty The Lilliput warrants that the product will be free from defects in materials and workmanship for a period of three years from the date of purchase of the product by the original purchaser from the Lilliput company. And the warranty period of accessories such as probe, battery, adapter is one year. This warranty only applies to the original purchaser and is not transferable to the third party. If the product proves defective during the warranty period, Lilliput either will repair the defective product without charge for parts and labor, or will provide a replacement in exchange for the defective product. Parts, modules and replacement products used by Lilliput for warranty work may be new or reconditioned to like new performance.all replaced parts, modules and products become the property of Lilliput. In order to obtain service under this warranty, Customer must notify Lilliput of the defect before the expiration of the warranty period. Customer shall be responsible for packaging and shipping the defective product to the service center designated by Lilliput, and with a copy of customer proof of purchase. This warranty shall not apply to any defect, failure or damage caused by improper use or improper or inadequate maintenance and care. Lilliput shall not be obligated to furnish service under this warranty a) to repair damage resulting from attempts by personnel other than Lilliput representatives to install, repair or service the product; b) to repair damage resulting from improper use or connection to incompatible equipment; c) to repair any damage or malfunction caused by the use of non-lilliput supplies; or d) to service a product that has been modified or integrated with other products when the effect of such modification or integration increases the time or difficulty of servicing the product. Please contact the nearest Lilliput s Sales and Service Offices for services or a complete copy of the warranty statement. Excepting the after-sales services provided in this summary or the applicable warranty statements, Lilliput will not offer any guarantee for maintenance definitely declared or hinted, including but not limited to the implied guarantee for marketability and special-purpose acceptability. Lilliput should not take any responsibilities for any indirect, special or consequent damages.

4 Contents Table of Contents Chapter Page 1.DECLARATION OF CONFORMITY Declaration of Conformity Open the Oscilloscope Parts Box,You Can See the Parts Below (see the picture below) 1 2.SAFETY INFORMATION Safety Terms and Symbols Specific Warning and Caution Terms that Appear throughout the Manual Terms Used on the Product Symbols Used on the Product General Safety Information 3 3. GENERAL CHARACTERISTICS 5 4.PERFORMING THE GENERAL INSPECTION Performing the General Inspection Check whether there is any Damage on it Due to Transportation Make a Check on Accessories Make a Check on the Complete Instrument 6 5.INPUT CONNECTIONS Input Connections Description for Front Panel and Keys 8 6.USING THE SCOPE About this Chapter Power-Up the Oscilloscope 10 1

5 Contents 6.3 Oscilloscope Operation Window Navigating a Menu Manually Setting the Vertical System, Horizontal System and Trigger Position Resetting the Oscilloscope Input Connections Displaying an Unknown Signal with Auto Set Automatic Zero-returning of Trigger Horizontal Position and 50% setting of Trigger Level Position Automatic Measurements Freezing the Screen Using Average for Smoothing Waveforms Using Persistence to Display Waveforms Using Peak Detection to Display Glitches Selecting AC-coupling Reversing the Polarity of the Displayed Waveform 21 7.USING THE MULTIMETER About this Chapter Making Meter Connections Multimeter Operation Window Making Multimeter Measurements Measuring Resistance Values Making a Diode Measurement On-off Test Making a Capacitance Measurement Making a DC Voltage Measurement Making a AC Voltage Measurement Making a DC Current Measurement Making an AC Current Measurement 29 2

6 Contents 7.5 Freezing the Readings Taking a Relative Measurement Selecting Automatic/ManualRange Adjustment 32 8.ADVANCED FUNCTION OF OSCILLOSCOPE About this Chapter Setting the Channel Setting the Channel Coupling Make Open and Close Settings on Channel Adjusting the Probe Scale Setting of Inverted Waveform Setting the Trigger System Triggering Control Edge Triggering Video Triggering Acquiring Mode Setting Display Setting Display Style Persistence Cymometer Waveform Saving Setups Function Setting Menu Making Automatic Measurements Setting the Cursor Measurements Autoscale System State Menu Setting of Time Base Mode Data Transmission 51 9.TROUBLE SHOOTING 53 3

7 Contents 10.APPENDIX Appendix A: Specifications Oscilloscope Meter General Specifications Appendix B: Maintenance and Cleaning Common Maintenance Storage of Oscilloscope Replacing the Lithium Battery Unit 59 4

8 1-Declaration of Conformity 1.Declaration of Conformity 1.1 Declaration of Conformity HDS1021M Handheld Digital Storage Oscilloscope & Multimeter Manufacturer: Fujian Lilliput Optoelectronic Technology Co., Ltd. Statement of Conformity Base on the result using appropriate standards,the product is in conformity with Electromagnetic Compatibility Directive 89/336/EEC Low Voltage Directive 73/23/EEC Sample tests Standards used: EN :2001(2nd edition) Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory use-part 1:General Requirements EN61326:1997+A1:1998+A2:2001+A3:2003 Electrical Equipment for Measurement, Control and Laboratory use-emc Requirements-part 1. General Requirements EN :2000+A2:2005 Electromagnetic Compatibility(EMC)-part 3:Limits-Section 2:Limits for Harmonic Current Emissions (Equipment Input Current less than/equal to 16A per phase) EN :1995+A1:2001 Electromagnetic Compatibility (EMC)-part 3:Limits-Section 3 Limitation of Voltage Fluctuations and Flicker in Low-Voltage Supply systems for Equipment with Rated Current less than or equal to 16A The tests have been performed in typical configuration. This conformity is indicated by the symbol CE, i.e."conformite Europeenne". 1

9 1-Declaration of Conformity 1.2 Open the Oscilloscope Parts Box,You Can See the Parts Below (see the picture below) # Description Standard Optional 1 Oscilloscope and Battery 2 Power adapter 3 Oscilloscope Probe x 1 (grey) 4 Multimeter test lead x 2 (black and red) 5 Extension module for big current measurement 6 Module for small capacitance measurement 7 The output termeral of 1KHz/5v signal 8 Probe adjustment tools 9 USB communication cable 10 User Manual 11 CD-ROM (software) 12 Soft carrying case figure 1: Digital Oscilloscope Parts 1

10 2-Safety Information 2.Safety Information In order to ensure the correct using and the best efficient service, please carefully read this user s manual. 2.1 Safety Terms and Symbols Specific Warning and Caution Terms that Appear throughout the Manual Warning: Warning identifies conditions and actions that pose hazards to the users. Caution: Caution identifies conditions and actions that may damage the product or other properties Terms Used on the Product The following terms appears possibly on the product: Danger: Warning: Notice: The term Danger is used in this manual to indicate that when you read this mark, personal injury may be caused to you immediately. The term Warning is used in this manual to indicate that when you read this mark, personal injury may not be caused to you immediately, but you need to be cautionary. The term Notice is used in this manual to indicate that damages may be caused on this product or other properties Symbols Used on the Product. The following symbols appear possibly on the product. High Voltage Please Consult the Manual. Protective Ground End Earth End on the Shell Grounding End for Measurement 2

11 2-Safety Information 2.2 General Safety Information Carefully read the following safety information in order to avoid any personal injury and damage on this product or any products connected with it. This product can only be used in the specified applications to prevent any possible dangers. Warning: To avoid fire or electrical shock. Please use proper power adapter. Use only the power adapter appointed by the manufacturer and subject to approval of being used in the user s country. Warning: To avoid fire or electrical shock if a test tool input is connected to more 42V peak (30Vrms) or on circuits of more than 4800VA: Use only insulated voltage probes, test leads and adapter supplied with the test tool, or indicated by OWON as suitable for the Oscilloscope & Multimeter. Before use, inspect voltage probes, test leads and accessories for mechanical damage and replace when damaged. Remove all probes, test leads and accessories (power adapter, USB line )that are not in use. Do not apply voltages that differ more than 400 V from earth ground to any input when measuring in a CAT Ⅱ environment. Do not apply voltages that differ more than 400 V from each other to the isolated inputs when measuring in a CAT Ⅱ environment. Do not apply input voltages above the rating of the instrument Use caution when using 1:1 test leads because the probe tip voltage will be directly transmitted to the Oscilloscope & Multimeter. Do not use exposed metal BNC or banana plug connectors. Do not insert metal objects into connectors. Always use the Oscilloscope & Multimeter only in the manner specified. Voltage ratings that are mentioned in the warning, are giver as limits for working voltage. The represent V ac rms (50-60Hz) for AC sine wave applications and as V dc for DC applications. Overvoltage Category Ⅱ refers to local level, CAT is the prefix refers to level II, Class II is a low-voltage high-energy level, which is applicable for appliances and portable equipment. Only qualified technical personnel are permitted to perform maintenance. Always connect the power adapter first to the AC outlet before connecting it to the 3

12 2-Safety Information Oscilloscope & Multimeter. Pay attention to the nominal values of all terminals:to avoid fire or electric shock, please keep a watchful eye on all nominal values and marks specified for this product. Before any connection performed on this product, carefully read the user s manual of the product for further information of nominal values. No operation is allowed without the instrument cover plate: If the cover plate or panel has been removed, do not perform any operation on this product. No touch is allowed on bare conductors:when the product is powered on, do not touch any bare joints or parts of the scope meter. Operation is prohibited in case of any undetermined failure:when in doubt any damage on this product, consult the qualified personnel for checking on it. Keep ventilation in good condition:refer to the user manual for detail installation instructions in order to fix this product correctly and provide it with good ventilation conditions. No operation is allowed under a humid environment. No operation is allowed under an explosive environment. Keep clean and dry on the product surface. The method which stipulated according to the factory does not use the equipment, possibly can damage the protection which the equipment provides. 4

13 3-General Characteristics 3. General Characteristics Oscilloscope Record length of 6,000 points; Reading-out with the cursor; Eighteen automatic measurement functions; Autoscale function; Color liquid crystal display of high resolution and high contrast; Storage and call-out of waveforms; Automatic setting function provided capable of fast setting; Implementation of detecting the average and peak values of the waveform; Edge and video triggering function; USB communication port; Multiple Language User Interface. Multimeter 3 3/4 digits; Volts,Amps,Ohms,Diode,Capacitance,Continuity measurement; 20A maximum amplitude; Isolated inputs between oscilloscope and multimeter. 5

14 4-Performing the General Inspection 4.Performing the General Inspection 4.1 Performing the General Inspection When you have got a new HDS1021M series oscilloscope, it is suggested that you should perform a general inspection on the instrument according to the following steps Check whether there is any Damage on it Due to Transportation If the packing boxes or foam cushions are found in serous damage, keep them in a proper place till the complete instrument and accessories have passed the electrical and mechanical tests Make a Check on Accessories The accessory list has been described in the picture of Digital Oscilloscope Parts of this manual. You can make a check and find whether there is any accessory loss with reference to the Appendix. In case of any accessory loss or damage, consult the OWON dealer responsible for such a business or the local office of OWON Make a Check on the Complete Instrument If the instrument is damaged in its appearance or it fails in normal operation or performance test, consult the OWON dealer responsible for such a business or the local office of OWON. If the instrument is damaged due to transportation, keep the packing in a proper place and consult the transportation department and the OWON dealer responsible for such business, who will provide an instrument replacement or maintenance. 6

15 5-Input connections 5.Input Connections 5.1 Input Connections See the following figure 2: Description: figure 2 1. The power adapter is supplied for AC power supply and battery recharging. 2. Multimeter test lead. 3. Multimeter input jacks, including three circular banana jacks and two square jacks. The three circular jacks are used for voltage, current and resistance inputs, while the two square jacks are used for capacitance inputs. 4. Oscilloscope probe. 5. Oscilloscope channel input. 6. The output terminal of 1KHz/5V square-wave test signal. 7

16 5-Input connections 5.2 Description for Front Panel and Keys See the following figure 3: Description: figure 3 1. Power adapter jack. 2. USB jack. 3. The output port of 1KHz/5V square-wave test signal. 4. : Power switch. 5. A: Multimeter current measurement key. 6. V: Multimeter voltage measurement key. 7. R: Multimeter resistance, triode, On/Off and capacitance measurement key. 8. OSC : Oscilloscope left-direction adjustment key. 9. OSC : Oscilloscope right-direction adjustment key. 10. OSC OPTION: Oscilloscope setting key. 8

17 5-Input connections With the combination application of the four keys OSC, OSC, OSC and OSC, the users can make the following settings circularly by pressing OSC OPTION. The settings include: Voltage Unit Scale of Channel; Primary Time base (TIME BASE), zero point position of channel, trigger horizontal position (TIME) and trigger level position (TRIG). In cursor measurement mode, the users can adjust the positions of Cursor 1(V1 or T1) and Cursor 2 (V2 or T2). 11. OSC : Oscilloscope display downward adjustment key. 12. OSC : Oscilloscope display upward adjustment key. 13. OSC/DMM: Operation mode switching key between oscilloscope and multimeter. 14. AUTO SET: Under the Multimeter Mode, when performing the current or voltage measurement, you can make a measurement switch between AC and DC with this key pressed; when performing the resistance measurement, you can select resistance, diode, On/Off or capacitance measurement circularly with this key. While this key is used for auto setting under the oscilloscope operation mode. 15. RUN/STOP: key for running or stopping the operation. 16. MENU : Choose the lower item on the menu list. 17. MENU: Show / Hide the menu. 18. MENU : Choose the upper item on the menu list. 19. F1~F5: Switch or Adjust options for each menu. 9

18 6-Using the scope 6.Using the Scope 6.1 About this Chapter This chapter provides a step-by-step introduction to the scope functions. The introduction does not cover all of the capabilities of the scope functions but gives basic examples to show how to use the menus and perform basic operations. 6.2 Power-Up the Oscilloscope Connect oscilloscope to AC power via a power adapter as shown in Figure 1. (The oscilloscope may still work with built-in Li-ion battery even without AC power supply) Turn the oscilloscope on by pressing down the power on/off key. The instrument then performs selfchecking after power on. A greeting window and a sentence press any key to continue will display on the screen when the system finishes selfchecking. The users can press any key to enter the measuring function. The oscilloscope is powered up in its last setup configuration. 6.3 Oscilloscope Operation Window See the following figure 4: Description: figure 4: Oscilloscope Operation Window 1. Battery electric quantity indicating symbols, including,, and. 10

19 6-Using the scope 2. Auto measurement window 1, in which f means frequency, T means cycle, V means the average value, Vp the peak-peak value, Vk the root-mean-square value,. Ma the maximum amplitude value, Mi the minimum amplitude value, Vt the Voltage value of the waveform s flat top value, Vb the Voltage value of the waveform s flat base, Va the amplitude value, Os the overshoot value, Ps the Preshoot value, RT the rise time value, FT the fall time value, PW the +width value, NW the -Width value, +D the +Duty value, -D the -Duty value. 3. Auto measurement window The pointer indicates the horizontal triggering position. 5. This reading gives the Time Difference between the horizontal triggering position and the screen centerline. It reads zero when the pointer is in the center of the screen. 6. The trigger state indicates the following information. Auto: The oscilloscope is working in the automatic mode and displaying the waveform under the non-trigger state. Trig d: The oscilloscope has detected a trigger and collecting the information generated after the trigger. Ready: All pre-triggered data have been captured and the oscilloscope has been ready to receive trigger signals. Scan: The oscilloscope can gather and display the waveform data continuously in scanning mode. Stop: The oscilloscope has stopped collecting the waveform data. 7. The green pointer shows the trigger voltage level. 8. A hidden-style menu: With the MENU key pressed, you can view or hide the menu. 9. It reads the value of trigger voltage level. 10. Menu setting options: There are different setting options for different menus. 11. The reading gives the value of primary time base. 12. These graphics present the coupling modes of the channel. The graphic ~ indicates AC, the graphic - indicates DC,the graphic indicates GND. 13. This reading shows the vertical Voltage Unit Scale of the channel. 14. OSC OPTION operation prompt: There are different prompts for different OSC OPTION operations. 15. The red pointer gives the grounding datum point of the waveform, which is the zero position. No display of this pointer indicates that the channel has not been opened. 16. Waveform of the input singal. 11

20 6-Using the scope 17. Waveform display area. 6.4 Navigating a Menu The following example shows how to use the tool s menus to select a function, as shown in the following figure. 1. Press the MENU key to display the Function Menu on the right of the screen and the corresponding optional settings on the bottom. Press MENU again will hide the Function Menu. 2. Press the MENU or MENU key to select different function menus. 3. Choose one key from F1 to F5 and press it to change function setting. See the following figure 5: figure 5: the Tool s Menus 6.5 Manually Setting the Vertical System, Horizontal System and Trigger Position With the combination application of the four keys OSC, OSC, OSC and OSC, the users can make the following settings circularly by pressing OSC OPTION. The settings include: Voltage Unit Scale of the Channel; Primary Time base (TIME BASE), zero point position of channel, trigger horizontal position (TIME) and trigger level position (TRIG). The following example shows how to use OSC OPTION key to make a setting. 1. Press once the OSC OPTION key; the following is displayed at the bottom left side of the screen, as shown in the figure below. / Time Base / Volts/Div 12

21 6-Using the scope See the following figure 6: figure 6: Voltage Unit Scale 2. Press the key OSC or OSC to adjust the vertical scale and press OSC or OSC to adjust the horizontal time scale. 3. Press the OSC OPTION key one more time, and the following display is visible at the bottom left side of the screen, shown as the following figure. / Time / Zero See the following figure 8: figure 7: Zero Point Position 6. Press OSC or OSC key to adjust the zero position in vertical direction and press OSC or OSC key to adjust the horizontal position. 9. Press OSC OPTION key once more and the following appears at the bottom left of the screen, shown as the following figure. 13

22 6-Using the scope / Time / Trig See the following figure 8: figure 8: Trigger Level Position 10. Press the OSC or OSC key to adjust the trigger position and press OSC or OSC key to adjust the horizontal position. 11. Press the OSC OPTION key again and return back to step 1. Term interpretation Vertical scale factor: It stands for the voltage amplitude represented by a division in the vertical direction of the display area, through the adjustment of which you can amplify or attenuate the signal and thus regulate the signal amplitude into the expected measurement range. Vertical zero position: It is referred to as the grounding datum point, through the adjustment of which you can regulate the display position of the waveform on the screen. Primary time base: It means the time values represented by a division in the horizontal direction of the display area. Trigger horizontal position: It means the time deviation between the actual trigger point and the screen central line, which will be displayed as 0 at the center point of the screen. Trigger level position: It represents the voltage deviation between the actual trigger level and the zero position of the triggering signal source channel. 6.6 Resetting the Oscilloscope If you want to reset the Oscilloscope to the factory settings, do the following: 1. Press MENU key and the function menu appears on the right side of the screen 14

23 6-Using the scope 2. Press the MENU or MENU key to select FUNCTION setting and three options are visible at the bottom of the screen. 3. Press F1 key to select the factory settings. The oscilloscope is set to be the factory settings. See the following figure 9: figure 9: Reset the Oscilloscope 6.7 Input Connections See figure 2. Look at the bottom and the right of the Oscilloscope. The Oscilloscope has six signal inputs: one safety BNC jack inputs for scope measurements, three safety 4-mm banana jack inputs for Multimeter R, V and A measurements, and two quadratic jack inputs for Multimeter capacitance measurements. Isolated input allows independent floating measurements between Multimeters and Scopes. 6.8 Displaying an Unknown Signal with Auto Set The Auto-Set feature lets the Oscilloscope display and measure unknown signals automatically. This function optimizes the position, range, time base, triggering and assures a stable display of virtually any waveform. This feature is especially useful for quickly checking several signals. To enable the Auto-Set feature, do the following: 1. Connect the test probe to the tested signals. 2. Press the AUTO SET key and the Oscilloscope is under the automatic measurement condition. The tested signals appear on the screen. 15

24 6-Using the scope 6.9 Automatic Zero-returning of Trigger Horizontal Position and 50% setting of Trigger Level Position When we adjust the trigger horizontal position and trigger level position to be maximal to make it off the screen center remotely, then we perform the following steps to make trigger horizontal position return to zero and trigger level position set to 50% automatically. 1. Press V key, the trigger horizontal position automatically returns to zero. 2. Press R key, the trigger level position automatically sets to 50% Automatic Measurements The Oscilloscope offers 18 types of automatic scope measurements. Your can display two numeric readings: measurement 1 and measurement 2. These readings are selectable independently, and the measurements can be done on the input waveform. To choose a average value measurement for measurement 1, do the following: 1. Press MENU key and the function menu appears on the right side of the screen. 2. Press MENU or MENU key to select MEAS SET1. Five items selectable are visible at the bottom of the screen. 3. Press F3 key to select Mean. The measurement 1 window shows the average value--v. To choose a Peak-Peak measurement for measurement 2, do the following: 1. Press MENU key and the function menu is displayed on the right side of the screen. 2. Press MENU or MENU key and select MEAS SET2, with 5 items selectable displayed at the bottom of the screen. 3. Press F4 key to select PK-PK. The measurement 2 window shows the peak-peak value--vp. See the following figure 10: 16

25 6-Using the scope figure 10: Automatic Scope Measurements 6.11 Freezing the Screen You can freeze the screen (all readings and waveforms) 1. Press the RUN/STOP key to freeze the screen and STOP appears at top right side of the screen. 2. Press the RUN/STOP key once more to resume your measurement. See the following figure 11: figure 11: Freezing the Screen 6.12 Using Average for Smoothing Waveforms To smooth the waveform, do the following: 1. Press the MENU key and the function menu appears on the right side of the screen. 2. Press MENU or MENU key to select ACQU MODE, with four items selectable 17

26 6-Using the scope displayed at the bottom of the screen. 3. Press the F3 key to select Average, then, press F4 key to jump to Averaging 16 item. This averages the outcomes of 16 acquisitions and shows the final averaging result on the screen, shown as the following figures. See the following figure 12: figure 12: Average Factor Sampling Mode 6.13 Using Persistence to Display Waveforms You can use Persistence to observe dynamic signals. 1. Press MENU key and the function menu appears on the right side of the screen. 2. Press MENU or MENU key to select DISP SET. Four items selectable are displayed at the bottom of the screen. 3. Press F2 key to select Persist 1 sec, 2 sec, and 5 sec, infinite or close. In this case, jump to Infinite and the observed dynamic is kept on the screen continuously. When the item Close is selected, the Persistence function is closed. Look at the display, a screen like the following figure 13 can be shown. 18

27 6-Using the scope figure 13: Persistence to Observe Dynamic Signals 6.14 Using Peak Detection to Display Glitches You can use this function to display events (glitches or other asynchronous waveforms) of 50 ns or wider. 1. Press MENU key and the function menu appears at the right side of the screen. 2. Press MENU or MENU key to select the ACQU MODE. Four items selectable are displayed at the bottom of the screen. 3. Press F2 key and jump to Peak Detect. In this case, you can test the glitch. Now, you can see a screen that looks like the following figure 14. Term interpretation figure 14: Peak Detection Collecting mode: The oscilloscope transforms the collected analog data into a digital form after 19

28 6-Using the scope they are gathered in the following three different modes, such as sampling, peak value detection and averaging values. Sampling: The oscilloscope takes samples from the signal at a equal time interval to reconstruct the waveform in this mode, by which the analog signal can be expressed correctly in most cases, yet, the rapid changes can not be collected between two sampling time intervals, causing the confusion and loss the narrow pulse in the signal probably. Peak value detection: The oscilloscope takes samples from the maximum and minimum of signals in each sampling interval and shows the waveform with the sampled data in this mode, thus, by which the oscilloscope may collect the possibly lost narrow pulse in the sampling mode but the noise is obvious. Averaging values: the oscilloscope collects several waveforms and average over them, and displays the averaged waveform in this mode, by which the random noise can be reduced. Duration time: When a new waveform is displayed, the previous waveform shown on the screen does not disappear immediately only to be displayed for a period of time, that is, the duration time, by setting which, the waveform can be displayed more continuously and thus a display similar to that shown by the analog oscilloscope can be achieved. Roll scan mode: The oscilloscope updates the waveform sampling points by scrolling display through a screen from left to right in this mode, which is only applicable to the primary time base setting of above 50ms Selecting AC-coupling After a reset, the Oscilloscope is dc-coupled so that ac and dc voltages appear on the screen, Use ac-coupling when you wish to observe a small ac signal that rides on a dc signal. To select ac-coupling, do the following: 1. Press MENU key and the function menu appears at the right side of the screen. 2. Press MENU or MENU key to select the CH SETUP. Four items selectable are visible at the bottom of the screen. 3. Press the F1 key and jump to AC. The bottom left side of the screen displays the ac-coupling icon. Now, you can see a screen that looks like the following figure

29 6-Using the scope figure 15: AC-Coupling 6.16 Reversing the Polarity of the Displayed Waveform To invert the input signal waveform, do the following: 1. Press the MENU key and the function menu appears at the right side of the screen. 2. Press the MENU or MENU key to select CH SETUP. Four items selectable are displayed at the bottom of the screen. 3. Press F4 key to jump to Inverted. The inverted waveform of the channel is displayed on the screen. Now, you can see a screen that looks like the following figure 16. figure 16: Inverted On 21

30 7-Using the Multimeter 7.Using the Multimeter 7.1 About this Chapter This chapter provides a step-by-step introduction to the multi-meter functions of the test tool hereafter. The introduction gives basic examples to show how to use the menus and perform basic operations. 7.2 Making Meter Connections Use the three 4-mm safety banana jack inputs for the Meter functions: COM, V/Ω, ma. Two quadratic capacitance jacks: CX See figure 2 for the connections. 7.3 Multimeter Operation Window figure 17: Multimeter Operation Window Description 1. Battery electric quantity indictor. 2. Manual/Auto range indictors, among which the MANUAL means measuring range in manual 22

31 7-Using the Multimeter operation mode and Auto refers to the measuring range in automatic operation mode. 3. Measurement mode indicators: DCV: Direct voltage measurement ACV: Alternating voltage measurement DCA: Direct current measurement ACA: Alternating current measurement R: Resistance measurement : Diode measurement : On/Off measurement C: Capacitance measurement 4. The relative magnitude measurement indicator. 5. Running state indicators, among which RUN expresses continuous update and STOP represents the screen locking. 6. The reference value of the relative magnitude measurement. 7. The multiplying power of the dial indication. To multiply the reading of dial pointer by multiplying power will get the measurement result. 8. The mail reading of measurement 9. Automatic control measuring range. 10. Absolute/ relative magnitude measuring control: The sign expresses the absolute magnitude measuring control and represents the relative magnitude measuring control. Manually measuring range control. 11. Manual measurement control. 12. Test lead indicated the scale of test reading, different test modes display different colors. 7.4 Making Multimeter Measurements Press DMM/OSC key, the oscilloscope will switch to the multimeter measure, the screen will display the multimeter windows, at the same time, prompt to correctly insert testing pen of the multimeter, at this time, then press any key to enter into multimeter measure. 23

32 7-Using the Multimeter Measuring Resistance Values To measure a resistance, do the following: 1. Press the R key and R appear at the top of the screen. 2. Insert the black lead into the COM banana jack input and the red lead into the V/Ω banana jack input. 3. Connect the red and black test leads to the resistor. The resistor value readings are shown on the screen in Ohm. Now, you can see a screen that looks like the following figure 18. figure 18: Resistance Measurement Making a Diode Measurement To make a measurement on the diode, do the following: 1. Press the R key and R appear at the top of the screen. 2. Press AUTO SET key till the following is displayed on the screen. 3. Insert the black lead into the COM banana jack input and the red lead into the V/Ω banana jack input. 4. Connect the red and black leads to the resistor and the diode resistor readings are displayed on the screen in V. Now, you can see a screen that looks like the following figure

33 7-Using the Multimeter figure 19: Diode Measurement On-off Test To perform an On-off test, do the following: 1. Press the R key and R appears on the top of the screen. 2. Press the AUTO SET key till the following is shown on the screen. 3. Insert the black lead into the COM banana jack input and the red lead into the V/Ω banana jack input. 4. Connect the red and black leads to the test point. If the resistance value of the tested point is less than 50Ω, you will hear beep sound from the test tool. Now, you can see a screen that looks like the following figure 20. figure 20: On-off Test 25

34 7-Using the Multimeter Making a Capacitance Measurement To measure a capacitance, do the following: 1. Press the R key and R appears on the top of the screen 2. Press the AUTO SET key till C appears at the top of the screen. 3. Insert the measured capacitance into the quadratic jack and the screen shows the capacitance reading. Notice: when measured value is less than 5 nf capacitance, please use small capacitance measurer of this multimeter and use relative value measuring mode to improve measuring precision. It will take about 30seconds if capacitance measurement is large than 40uF. Now, you can see a screen that looks like the following figure 21. figure 21: Capacitance Measurement Making a DC Voltage Measurement To measure a DC voltage, do the following: 1. Press the V key and DCV appears at the top of the screen. 2. Insert the black lead into the COM banana jack input and the red lead into the V/Ω banana jack input. 3. Connect the red and black leads to the measured point and the measured point voltage value is displayed on the screen. Now, you can see a screen that looks like the following figure

35 7-Using the Multimeter figure 22: DC Voltage Measurement Making a AC Voltage Measurement To measure the AC voltage, do the following: 1. Press the V key and DCV appears at the top of the screen. 2. Press the AUTO SET key and ACV appears at the top of the screen. 3. Insert the black lead into the COM banana jack input and the red lead into the V/Ω banana jack input. 4. Connect the red and black leads to the measured points and the AC voltage values of measured points will be displayed on the screen. Look at the display, you can see a screen that looks like the following figure 23. figure 23: AC Voltage Measurement 27

36 7-Using the Multimeter Making a DC Current Measurement To measure a DC current which is less than 400 ma, do the following: 1. Press the A key and DCA appears at the top of the screen. The unit on the main reading screen is ma. ma and 20A will display on the right bottom of screen, press F4 or F5 to switch the measurement between ma and 20A. 400mA is acquiescently. 2. Insert the black lead into the COM banana jack input and the red lead into the ma banana jack input. 3. Connect the red and black leads to the measured points and the DC current values of measured points will be displayed on the screen. Look at the display, you can see a screen that looks like the following figure 24. figure 24: DC Current Measurement for 400 ma To measure a DC current which is larger than 400 ma, do the following: 1. Press the A key and DCA appears at the top of the screen. The unit on the main reading screen is ma.. 2. Press F5 key change to 20A measurement, the unit on the main reading screen is A. 3. Plug current extended module in current measure jack, then plug the probe in the module 4. Connect the red and black leads to the measured point and the DC current value of the measured point will be displayed on the screen. 5. Press F4 return to 400 ma measure. Look at the display, you can see a screen that looks like the following figure

37 7-Using the Multimeter figure 25: DC Current Measurement for 20A Making an AC Current Measurement To measure an AC current which is less than 400 ma, do the following: 1. Press the A key and DCA appears at the top of the screen. The unit on the main reading screen is ma. ma and 20A will display on the right bottom of screen, press F4 or F5 to switch the measurement between ma and 20A. 400mA is acquiescently. 2. Press the AUTO SET key once and ACA is visible at the top of the screen.. 3. Insert the black lead into the COM banana jack input and the red lead into the ma banana jack input. 4. Connect the red and black leads to the measured point and the AC current value of the measured point will be displayed on the screen. Look at the display, you can see a screen that looks like the following figure 26. figure 26: AC Current Measurement for 400 ma 29

38 7-Using the Multimeter To measure an AC current which is larger than 400 ma, do the following: 1. Press the A key once and DCA is visible on the top of the screen. 2. Press F5 to select 20A measure, the unit of main reading window is A. 3. Press the AUTO SET key once and ACA is visible on the top of the screen. 4. Plug current extended module in current measure jack, then plug the probe in the module. 5. Connect the red and black leads to the measured point and the AC current value of the measured point will be displayed on the screen. 6. Press F4 return to 400mA measure. Look at the display, you can see a screen that looks like the following figure 27. figure 27: AC Current Measurement for 20A 7.5 Freezing the Readings You can freeze the displayed readings at any time. 1. Press the RUN /STOP key to freeze the screen and STOP will be displayed at the top right of the screen. 2. Again, press the RUN /STOP key, you can resume your measurement. Look at the display, you can see a screen that looks like the following figure

39 7-Using the Multimeter figure 28: Freezing the Readings 7.6 Taking a Relative Measurement A currently measured result relative to the defined reference value is displayed in a relative measurement. The following example shows how to take a relative measurement. At first, it is required to acquire a reference value. 1. Press R key and R is displayed on the top side of the screen. 2. Press the AUTO SET key till C appears at the top of the screen. 3. Plug capacitance extended module in capacitance measure jack. 4. When the reading leveling off, press F2 key and is displayed on the top side of the screen. The saved reference value is displayed below. 5. Plug capacitance, the displayed major reading on the screen is actual the capacitance value. Look at the display, you can see a screen that looks like the following figure 29. figure 29: Relative Measurement 31

40 7-Using the Multimeter 7.7 Selecting Automatic/ManualRange Adjustment The defaulted range mode of the instrument is automatic range. To switch to the manual range, perform the following steps: 1. Press F1 key and MANUAL is displayed on the top left side of the screen to enter the manual range mode. 2. Under the manual range mode, the measuring range is increased by a stage when pressing F1 key each time, and when reaching the highest stage, it jumps to the lowest stage by pressing F1 key once again. To multiply the reading of dial pointer by multiplying power and the unit of main reading on the screen will get the measurement result. 3. Press F3 key and AUTO is displayed on the top left side of the screen to switch back to the automatic range mode. Look at the display, you can see a screen that looks like the following figure 30. figure 30: Automatic/Manual Range Adjustment Attention:capacitance measurement without manual range mode. 32

41 8-Advanced Function of Oscilloscope 8.Advanced Function of Oscilloscope 8.1 About this Chapter This chapter will detail the oscilloscope function of the test tool. 8.2 Setting the Channel Each channel has its own independent vertical menu and each item can be set respectively based on the specific channel. To make channel settings, do the following: 1. Press the MENU key and the function menu appears at the right of the screen. 2. Press the MENU or MENU key to jump to CH SETUP and 4 options appears at the bottom of the screen. 3. Select and press key from F1 through F4 keys to make different settings. Now, you can find a screen that looks like the following figure 31. figure 31: Setting the Vertical The following Table describes the Vertical Channel menu: 33

42 8-Advanced Function of Oscilloscope Function menu Setting Description Coupling AC DC Ground The DC component in the input signal is blocked. The AC and DC components of the input signal are allowed. Input signal is interrupted. Channel OFF Close the channel. ON Open the channel. 1X Probe 10X Select one according the probe attenuation factor to ensure a 100X correct vertical scale reading. 1000X Inverted OFF Waveform is displayed normally. ON Open the Invert function of the waveform setting Setting the Channel Coupling For example, the measured signal is a square wave signal containing a DC offset. Press F1 Coupling first and then AC to make an ac coupling setting. The DC component contained in the tested signal is blocked. Press F1 Coupling first and then DC to make a DC coupling setting. Both dc and ac components contained in the tested signal are permitted. Press F1 Coupling first and then Ground to make a Ground coupling setting. Input signal is interrupted. The waveform is displayed as the following figure 32, figure 33, figure 34. figure 32: AC Coupling 34

43 8-Advanced Function of Oscilloscope figure 33: DC Coupling figure 34: Ground Coupling Make Open and Close Settings on Channel Press F2 Channel key first, then select OFF to make a Close setting on channel. Press F2 Channel key first, then select ON to make an Open setting on channel Adjusting the Probe Scale It is necessary to adjust the probe attenuation scale factor correspondingly in the channel operation menu in order to comply with the probe attenuation scale. If it is a 10:1 probe, the scale of the input channel of the oscilloscope should be selected as 10X to avoid any error occurring in the displayed scale factor information and tested data. Press F3 Probe to jump to the relative probe. Table: Probe attenuation factor and the corresponding menu setting 35

44 8-Advanced Function of Oscilloscope Probe attenuation factor Corresponding Menu Setting 1:1 1X 10:1 10X 100:1 100X 1000:1 1000X Setting of Inverted Waveform Inverted waveform: The displayed signal reverses 180 degrees relatively to the ground potential. Press F4 Inverted to start Invert; again press F4 Inverted to close Invert. 8.3 Setting the Trigger System The Trigger defines the time when the acquisition of data and display of waveform start. If it is set correctly, the trigger can turn an unstable display into a significant waveform. When starting the acquisition of data, the oscilloscope collects sufficient data to draw the waveform at the left side of the triggering point. With waiting for the triggering condition, the oscilloscope is gathering data continuously. After a trigger is detected, the oscilloscope gathers enough data continuously to draw the waveform at the right side of the triggering point. To make a trigger mode setting, do the following: 1. Press the MENU key and the function menu appears at the right of the screen. 2. Press the MENU or MENU key to select TRIG MODE and five items selectable are displayed at the bottom of the screen. 3. Select and press one from F1 through F5 key to make a different setting. 4. Press the OSC OPTION key and the following is shown on the screen: / Time / Trig 5. Press the OSC or OSC key to adjust the trigger level position. Now, look at the display, you can see a screen in the following figure35. 36

45 8-Advanced Function of Oscilloscope figure 35: Edge Trigger 8.4 Triggering Control There are two triggering modes including Edge triggering and Video triggering. Each trigger mode is set by different function menu. Edge triggering: It occurs when the trigger input passes through a given level along the specified direction. Video triggering: Perform video field trigger, line trigger, odd field trigger, even field trigger or line NO. trigger on the standard video signals. The following describes the Edge triggering and Video triggering menus respectively Edge Triggering The Edge triggering is a mode by which trigger occurs at the triggering threshold value of the input signal edge. With the Edge triggering selected, the trigger happens on the rise or fall edge of the input signal, shown as figure 35. The Edge triggering menu is described in the following table. Function menu Settings Description Slope Rising Triggering on the rise edge of the signal. Falling Triggering on the fall edge of the signal. Auto Acquisition of waveforms is possible even if there is no triggering condition detected. Mode Normal Acquisition of waveforms can only be done when the triggering condition is satisfied. Single The sampling is performed on a waveform when one trigger is detected, then stop sampling. Sens 0.2~1.0div Set trigger sensitivity. Holdoff To go to holdoff menu 37

46 8-Advanced Function of Oscilloscope Video Triggering With Video triggering selected, the oscilloscope performs the NTSC, PAL or SECAM standard video signals field, line,odd field,even field or line num trigger. Figure 36 is the Video Line Trigger, figure 37,figure 38 is the Video Line trigger. figure 36: Video Line Trigger figure 37: Video Line NO. trigger(page1) figure 38: Video Line NO. trigger(page2) when the sync is Line,Field,Odd Field,Even Field,the menu is shown as bellow. Function menu Settings Description Line Make a video line trigger synchronization setting. Sync Field Make a video field trigger synchronization setting. Odd Field Make a video odd field trigger synchronization setting. Even Field Make a video even field trigger synchronization setting. MODU Holdoff NTSC PAL/SECAM Video format setting Go to the holdoff menu. when the sync is Designed Line,the menu is shown as bellow. 38

47 8-Advanced Function of Oscilloscope Function menu Settings Description Sync Designed Line Make a video designed line synchronization setting. MODU Holdoff NTSC PAL/SECAM Video format setting Go to the holdoff menu. Go to the next menu. Line Line No. increase decrease Set the line value to increase. Set the line value to decrease. Set and Show the line valve. Back up to previous menu. When you go to the holdoff menu,you can see a screen in the following figure39. Figure39:Trigger Holdoff the Holdoff menu is described in the following table: Function menu Settings Description Off Time 100ns~10s Set time slot before another trigger event. Time Reset Off Time Back increase decrease Set the off time to increase. Set the off time to decrease. Reset Holdoff time to100ns. Back up to previous menu. Note: Trigger Holdoff can stabilize complex waveform,such as the pulse range.holdoff time is the oscilloscope s waiting period before starting a new trigger.during Holdoff,oscilloscope will not 39

48 8-Advanced Function of Oscilloscope trigger until Holdoff ends. Term interpretation Trigger modes: There are three kinds of trigger modes available for this oscilloscope, they are auto, normal and single shot. Automatic trigger mode: The oscilloscope can acquire the waveform without any triggering condition detected in this mode, in which it will be triggered compulsively when waiting for a specified period of time without any triggering condition ignited When an invalid trigger is enforced,the oscilloscope can not keep the waveform in phase. Normal trigger mode: In this mode, the oscilloscope cannot acquire the waveform till it is triggered. When there is not any trigger, the oscilloscope will display the origin waveform without new waveforms captured. Single shot mode: In this mode, the oscilloscope will detect a trigger and capture a waveform at each time when the customer presses the RUN/STOP key. Holdoff: Set time slot before another trigger event. 8.5 Acquiring Mode Setting The Acquiring Mode menu is described in the list shown as below. Function menu Settings Description Sample Normal sampling mode. Peak Detect Used to detect the jamming glitch and reduce the possible blurring. Average Used to reduce the random and unrelated noises. Several average factors are available for being selected. Averages 4, 16, 64 Select the average factor. or Display Setting The DISP SET menu is described in the following table. Function menu Settings Description Type Vectors Dots The vector is filled up spaces between neighboring sampling points in the display. Only sampling points are displayed. Persist OFF 1s 2s 5s Infinite Setting persistence time for each sampling point. 40